Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays

Title:	Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays
Authors:	R., Aaij B., Adeva M., Adinolfi A., Affolder Z., Ajaltouni
Keywords:	B physics;;Branching fraction;;Flavour Changing Neutral Currents;Hadron-Hadron Scattering; Rare decay
Issue Date:	2014
Publisher:	Journal of High Energy Physics
Citation:	Scopus

URI:	http://link.springer.com/article/10.1007%2FJHEP06%282014%29133 http://repository.vnu.edu.vn/handle/VNU_123/34197

The isospin asymmetries of B → Kμ + μ - and B → K * μ + μ - decays and the partial branching fractions of the B 0 → K 0 μ + μ -, B + → K + μ + μ - and B + → K *+ μ + μ - decays are measured as functions of the dimuon mass squared, q 2. The data used correspond to an integrated luminosity of 3 fb-1 from proton-proton collisions collected with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV in 2011 and 2012, respectively. The isospin asymmetries are both consistent with the Standard Model expectations. The three measured branching fractions favour lower values than their respective theoretical predictions, however they are all individually consistent with the Standard Model. [Figure not available: see fulltext.]